boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2022-49561MEDIUM
Linux Linux — netfilter: conntrack: re-fetch conntrack after insertion
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0081   54.0     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    71d8c47fc653711c41bc3282e5b0e605b3727956 –  —
  Linux    4.7 –                                       4.14.282
TIMELINE
  Feb 26  Reserved by Linux
  Feb 26  Published (CNA: Linux)
  Aug 4   RESCORED — CVE-2022-49561 (Linux). CVSS 9.8 → 5.5 (NVD).
CNA: Linux · CVSS v3.1 · 8 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: re-fetch conntrack after insertion In case the conntrack is clashing, insertion can free skb->_nfct and set skb->_nfct to the already-confirmed entry. This wasn't found before because the conntrack entry and the extension space used to free'd after an rcu grace period, plus the race needs events enabled to trigger.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
February 26, 2025ReservedReserved by Linux
February 26, 2025PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2022-49561 (Linux). CVSS 9.8 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux71d8c47fc653711c41bc3282e5b0e605b3727956
LinuxLinux4.74.14.282

References (8)

Related

Authoritative record: CVE-2022-49561 at cve.org

Vendors: linux

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-49561 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.